Punchbag

ABSTRACT

A punchbag is composed of an inner bag and an outer bag. The two bags can be separated from each other and folded respectively to make easy transportation and storage. This punchbag has an excellent rebound due to dividing the inner bag into a water chamber and an air chamber.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a punchbag that can be filled with water and air to adjust a required weight of the punchbag whereby the punchbag has an excellent rebound and simulates well the impact of blows on a human body.

[0003] 2. Description of Related Art

[0004] A conventional punchbag as shown in FIG. 4 comprises a bag (30) suspended by three chains (31) at a top hem of the bag (30). A hook (32) is engaged with distal ends of the three chains (31) and is attached to a suitable place of a ceiling or other high places. The bag (30) is filled with stuffing (33) such as coarse cotton or chopped tires, and the chopped tires can enhance a weight of the punchbag.

[0005] However, several disadvantages exist in this conventional punchbag and are listed as following:

[0006] 1. Difficulty in transportation: Because the bag (30) is filled with coarse cotton and chopped tires, a finished product of the conventional punchbag not only takes up a lot of space but also has a cumbersome weight when it is transported.

[0007] 2. Inconvenience in storage:

[0008] The conventional punchbag can not be folded or reduced after use, therefore it is inconvenient for storage.

[0009] 3.No sense of reality:

[0010] The stuffing (33) inside the bag (30) is composed of coarse cotton and chopped tires, and both materials have bad elasticity and bad rebound, and therefore punching the conventional punchbag can not give the authenticity of fighting with a real opponent.

[0011] For those sakes and to overcome the shortcomings, the present invention tends to provide a punchbag to mitigate and obviate the aforementioned problems.

SUMMARY OF THE INVENTION

[0012] The main objective of the invention is to provide a punchbag that has an inner bag and an outer bag, and these two bags can be separated from each other and folded respectively whereby the punchbag is easily stored.

[0013] Another objective of the invention is to provided a punchbag wherein the inner bag is divided into a water chamber and an air chamber, therefore the inner bag is filled with water and air to make the punchbag have excellent rebound.

[0014] Still another objective of the invention is to provide a punchbag that makes a user to have a sense of reality while punching it.

[0015] Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016]FIG. 1 is an exploded view of a punchbag of this invention;

[0017]FIG. 2 is a cross-sectional view of a water outlet on an inner bag of the punchbag in accordance with FIG. 1;

[0018]FIG. 3 is a cross-sectional view of the assembled punchbag; and

[0019]FIG. 4 is a perspective view of a conventional punchbag.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

[0020] As shown in FIGS. 1 and 2, a punchbag is composed of an outer bag (10), an inner bag (20) disposed inside the outer bag (10), and a retaining device (30).

[0021] The outer bag (10) is made of a soft material such as cloth and has an open end (11) defined in a top face and a lid (14) matched with the open end (11). The lid (14) is combined with a top hem (13) of the outer bag (10) by a zipper (15) to cover the open end (11).

[0022] The inner bag (20) is concentrically divided into an outer water chamber (21) and an inner air chamber (22). The water chamber (21) has an inclined top face (23). A water outlet (24) is defined in the inclined top face of the water chamber (21) and a water plug (25) is securable in the water outlet (24) to provide access to and closure of the water chamber (21). Additionally, as shown in FIG. 2, the water outlet (24) has a valve plate (28) hinged to an inner wall thereof on the inclined top face of the water chamber (21) to enhance the anti-leaking ability. The air chamber (22) has an air outlet (26) defined in a top surface of the air chamber (22). An air plug (27) corresponding to the air outlet (26) is securable to the top surface of the air chamber (22) to allow inflation of and seal of the air chamber (22).

[0023] The retaining device (30) comprising four belts (31) are evenly connected with an outside periphery of the outer bag (10) at first ends, and each belt (31) has a half-moon ring (32) at a second end to connect with a group of chains (33). A hook (34) is secured at a top of the chains (33).

[0024] In assembly of the punchbag, the unstuffed inner bag (20) is put inside the outer bag (10) first. Then water is poured into the water chamber (21) via the water outlet (24) until the water fills half capacity of the water chamber (21) and the water plug (25) is inserted into the water outlet (24). Next, air is pumped into the air chamber (22) to make the air chamber (22) totally expand, and at the same time, the water inside the water chamber (21) is squeezed by a force of the expanded air chamber (22) and rises to a top of the water chamber (21). Finally, the air plug (27) is mounted on the air inlet (26) to seal the air chamber (22).

[0025] After completely filling the inner bag (20), the lid (14) of the outer bag (10) is joined with the top hem (13) by zipping the zipper (15) and then the whole punchbag can be hung at a required place by the hook (34) and the chains (33). A quantity of the water poured inside the water chamber (21) controls both an ideal weight and a softness/hardness of the punchbag to make the punching realistic. Moreover, the valve plate (28) formed on the inner wall of the water outlet (24) seals the water chamber (21) tightly and prevents water from spurting out when the punchbag is punched violently.

[0026] According to the above description, several advantages are concluded as in the following list:

[0027] 1. Easily transported:

[0028] The outer bag (10) and the inner bag (20) can be separated from each other and folded when the inner bag (20) is not stuffed with air and water, so that this invention is easily transported.

[0029] 2. Conveniently stored:

[0030] The stuffing inside the inner bag (20), the water and the air, are easily squeezed out of the water chamber (21) and the air chamber (22), therefore the punchbag is conveniently stored after releasing the stuffing.

[0031] 3. Authenticity:

[0032] The weight and rebounding force of the punchbag achieved by pouring different quantities of the water into the water chamber (21) result in a sense of punching a real opponent.

[0033] It is to be understood that this invention is practical and beneficial for user and manufacturer. However, although numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention. The disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the fill extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. A punchbag comprising: an outer bag having an open end defined therein, a lid detachably connected with an outer periphery of the outer bag to cover the open end; an inner bag receivable in the outer bag and having a water chamber for sealingly containing therein water and an air chamber defined inside the water chamber for sealingly containing therein air; and a retaining device securely formed on the outer bag to secure the outer bag.
 2. The punchbag as claimed in claim 1, wherein the inner bag is concentrically received inside the outer bag in relation to the outer bag.
 3. The punchbag as claimed in claim 1, wherein a water outlet is defined in the water chamber and a plug is securable in the water outlet to block the water outlet, and wherein an air outlet is defined in the air chamber and an air plug is securable in the air outlet to block the air outlet.
 4. The punchbag as claimed in claim 2, wherein a water outlet is defined in the water chamber and a plug is securable in the water outlet to block the water outlet, and wherein an air outlet is defined in the air chamber and an air plug is securable in the air outlet to block the air outlet.
 5. The punchbag as claimed in claim 1, wherein the water chamber has an inclined top face.
 6. The punchbag as claimed in claim 2, wherein the water chamber has an inclined top face.
 7. The punchbag as claimed in claim 3, wherein the water chamber has an inclined top face.
 8. The punchbag as claimed in claim 4, wherein the water chamber has an inclined top face.
 9. The punchbag as claimed in claim 5, wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.
 10. The punchbag as claimed in claim 6, wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.
 11. The punchbag as claimed in claim 7, wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.
 12. The punchbag as claimed in claim 8, wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.
 13. The punchbag as claimed in claim 1, wherein the retaining device has at least one chain securely connected to the outer periphery of the outer bag and a hook securely connected with a free end of the at least one chain thereby allowing the punchbag to be hung on a location. 14, The punchbag as claimed in claim 13, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.
 15. The punchbag as claimed in claim 1 further having a zipper provided between the outer periphery of the open end and the lid so that the lid is able to detachably connect with the outer periphery of the outer bag. open end
 16. The punchbag as claimed in claim 2, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain. 17, The punchbag as claimed in claim 3, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain. 18, The punchbag as claimed in claim 5, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain. 19, The punchbag as claimed in claim 9, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain. 20, The punchbag as claimed in claim 15, wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain. 